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Title: DP Meter Verification System - Operator Field Results and Practical Use
Author: Jennifer Rabone Kim Lewis
Source: 2017 North Sea Flow Measurement Workshop
Year Published: 2017
Abstract: Verifying the performance of any on line flow meter has its challenges. Standards are published in order to minimise the risk of unacceptable and unaccounted for measurement errors by offering clear and consistent requirements, specifications and guidelines in order to safeguard good meter performance. Operator specific guidelines are often used in addition to the standards. Site specific maintenance / inspection procedures are enforced in order to minimise the risk of financial exposure resulting from unforeseen or unpredictable problems which may cause an error or bias in meter system output. The majority of standards, guidelines and procedures were written on the assumption that it is not possible to verify the meter system performance in situ without external cross checks (e.g., pay and check meters or mass balance checks) and scheduled spot checks (e.g., calibrations and inspections). Cousins et al 1 highlighted the inefficiencies of such traditional verification methods which are not only financially costly but are often performed unecessarily, are performed too late to save a significant mis-measurement or are inconclusive and unhelpful.

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